Still Using Windows? 5 Mistakes That Could Put Your Computer at Risk

Your Windows computer may look perfectly fine, but that does not automatically mean it is secure.

Many users continue using the same laptop or desktop for years without checking security settings, updating software or reviewing the apps installed on their devices.

The problem is that some common habits can expose personal files, passwords and financial information to unnecessary risks.

Here are five mistakes worth avoiding.

1. Ignoring Windows Security Updates

Security updates are not just about adding new features. They also fix vulnerabilities that attackers could exploit.

Windows 10 reached its official end of support on October 14, 2025. Standard installations no longer receive regular security updates, although eligible users can receive additional protection through Microsoft's Extended Security Updates (ESU) programme.

What you should do:

• Check whether your computer can upgrade to Windows 11.
• Open Windows Update and install available updates.
• If you must remain on Windows 10, check whether you qualify for ESU.
• Avoid assuming that antivirus software alone can replace operating system security updates.

Official information: https://support.microsoft.com/en-us/windows/deployment/updates-lifecycle/windows-10-support-has-ended-on-october-14-2025

2. Downloading Software From Untrusted Websites

Looking for free software can sometimes lead users to unofficial download pages, fake installers and suspicious advertisements.

Some downloads may contain unwanted programmes or malware that can compromise your computer.

What you should do:

• Download apps from their official websites or trusted app stores.
• Avoid cracked software and suspicious activation tools.
• Check installation screens before clicking “Next”.
• Do not run files or scripts from unknown sources just because an online tutorial recommends them.

Free software is not necessarily dangerous. The important thing is knowing where it comes from.

3. Using the Same Password Everywhere

If one website suffers a data breach, criminals may try the exposed password on other services.

Using the same password for your email, shopping accounts and financial services can increase the damage if one account is compromised.

What you should do:

• Use a different password for every important account.
• Consider a reputable password manager.
• Enable two-factor authentication where available.
• Protect your primary email account because it is often used to reset other passwords.

A strong password is useful, but using unique passwords is equally important.

4. Never Backing Up Important Files

Imagine losing years of family photos, work documents or personal records because your storage drive fails or ransomware locks your files.

Without a backup, recovering everything may be difficult or impossible.

What you should do:

• Back up important documents and photos regularly.
• Keep another copy on an external drive or a trusted cloud service.
• Disconnect external backup drives when they are not being used, where practical.
• Check occasionally that your backup files can actually be restored.

Remember: syncing files between devices is not always the same as having an independent backup.

5. Disabling Antivirus or Ignoring Security Warnings

Some users disable Microsoft Defender or ignore security alerts because they believe these warnings are annoying.

Others approve every permission request without checking what an application wants to access.

These habits can make it easier for malicious software to operate unnoticed.

What you should do:

• Keep Windows Security protection enabled unless you have a legitimate, carefully managed alternative.
• Do not ignore warnings about suspicious downloads.
• Review app permissions and remove software you no longer need.
• Be cautious with unexpected email attachments and links.

No security tool can guarantee complete protection, but sensible settings can reduce avoidable risks.

Bonus: Check Whether Your PC Is Still Supported

Press Windows + R, type winver and press Enter to check your Windows version.

Next, open Windows Update to see whether updates are available. If you use Windows 10, check your eligibility for Windows 11 or the ESU programme rather than assuming your computer is still receiving standard security fixes.

You do not necessarily need to buy a new computer immediately. First, check its compatibility, your software requirements and the options available for keeping it secure.

Final Thoughts

A computer does not have to look broken to have a security problem.

Ignoring updates, downloading suspicious software, reusing passwords, skipping backups and disabling protection are five habits worth changing.

Before spending money on a new laptop, take a few minutes to check whether your current computer is properly protected.

A little maintenance today could save you a much bigger headache later.

Sources

• Microsoft — Windows 10 end of support: https://support.microsoft.com/en-us/windows/deployment/updates-lifecycle/windows-10-support-has-ended-on-october-14-2025
• Microsoft — Windows lifecycle FAQ: https://learn.microsoft.com/en-us/lifecycle/faq/windows
• Microsoft — Windows Security: https://www.microsoft.com/en-us/windows/comprehensive-security